The relative ineffectiveness of information retrieval systems is largely caused by the
inaccuracy with which a query formed by a few keywords models the actual user information …

This paper describes a simple way of adapting the BM25 ranking formula to deal with
structured documents. In the past it has been common to compute scores for the individual …

Mental health is a significant and growing public health concern. As language usage can be
leveraged to obtain crucial insights into mental health conditions, there is a need for large …

The inherent ambiguity of short keyword queries demands for enhanced methods for Web
retrieval. In this paper we propose to improve such Web queries by expanding them with …

In this paper we describe our participation in the NIST TRECVID-2003 evaluation. We
participated in four tasks of the benchmark including shot boundary detection, high-level …

In this article we present novel learning methods for estimating the quality of results returned
by a search engine in response to a query. Estimation is based on the agreement between …

When searching large hypertext document collections, it is often possible that there are too
many results available for ambiguous queries. Query refinement is an interactive process of …

We study the problem of semantic concept-based query expansion and re-ranking for
multimedia retrieval. In particular, we explore the utility of a fixed lexicon of visual semantic …

Background: Postmarket drug safety surveillance largely depends on spontaneous reports
by patients and health care providers; hence, less common adverse drug reactions …

(57) ABSTRACT A computer retrieval system includes memory which stores instructions for
(1) receiving a user query in a natural lan guage,(2) identifying text strings from an …